What does Spathic mean?

: resembling spar : foliated, lamellar, spathose.

Why is siderite the poorest variety of iron ore?

Spathic iron ore. Although spathic (carbonate) iron ores, such as siderite, have been economically important for steel production, they are far from ideal as an ore. The carbonate ore is more difficult to smelt than a haematite or other oxide ore.

What does siderite look like?

Physical Properties of SideriteHide Yellowish-brown to greyish-brown, pale yellow to tannish, grey, brown, green, red, black and sometimes nearly colourless; tarnished iridescent at times; colourless to yellow and yellow-brown in transmitted light.

Is siderite found in India?

Siderite (Fe CO3) Hematite and magnetite are the most important ore minerals in the Indian iron ore deposits. Major amount of Magnetite is found in Karnataka, Andhra Pradesh, Rajasthan and Tamil Nadu. Minor amount of Magnetite is found in Assam, Bihar, Goa, Jharkhand, Kerala, Maharashtra, Meghalaya and Nagaland.

Which is called Spathic iron?

Spathic Iron Ore. —Carbonate of iron, when found in a comparatively pure and crystallized state, is known as spathic or sparry. Siderite, or spathic iron ore, FeCO3, crystallizes in the rhombohedral system and contains 48.28% of iron.

What is a spastic?

adjective. Someone who is spastic is born with a disability which makes it difficult for them to control their muscles, especially in their arms and legs. People now refer to someone with this disability as having cerebral palsy. [offensive] A spastic is someone who is spastic.

Which is better magnetite or hematite?

While magnetite ore requires more treatment, end products made from magnetite ore are typically of higher quality than those made from hematite ore. That’s because magnetite ore has fewer impurities than hematite ore; in this way, the elevated cost of processing magnetite ore can be balanced out.

What is the best quality of iron?

Among all the ores of Ferrous (Iron) magnetite is the finest quality of iron ore.

Does siderite react to acid?

The mineral reacts with hydrochloric acid to produce carbon dioxide gas, water, a dissolved metal ion, and dissolved chlorine. The reactions for magnesite (MgCO3) and siderite (FeCO3) are shown below. Calcite, with a composition of CaCO3, will react strongly with either cold or warm hydrochloric acid.

Is siderite an ore of copper?

Siderite: This ore is not an ore of copper. Siderite is composed of iron (II) and has the formula FeCO3. It is derived from the word sideros which means ‘iron’. It is an iron mineral and contains 48 iron and contains no sulphur.

Which state of India is the largest producer of mica?

Mica: Mica deposits mainly occur in Jharkhand, Bihar, Andhra Pradesh and Rajasthan. India is the largest producer and exporter of mica in the world. Copper: It is mainly produced in Rajasthan, Madhya Pradesh, Jharkhand, Karnataka and Andhra Pradesh.

Which Indian state is famous for diamonds?

Madhya Pradesh
Madhya Pradesh is known for the only industrial-scale diamond mine in India which is the Majhgawan mines near the town of Panna in the Bundelkhand area.

What was the original meaning of the word spatha?

In the imperial period, the Romans adopted the original Greek term, spáthē (σπάθη), as spatha, which still carried the general meaning of any object considered long and flat. Spatha appears first in Pliny and then Seneca with different meanings: a spatula, a metal-working implement, a palm-leaf and so on.

When did the term spastics become an insult?

The Scottish Council for the Care of Spastics was founded in 1946, and the Spastics Society, an English charity for people with cerebral palsy, was founded in 1951. However, the word began to be used as an insult and became a term of abuse used to imply stupidity or physical ineptness: One who is uncoordinated or incompetent, or a fool.

When did the Romans start using the sword spatha?

Later swords, from the 7th to 10th centuries, like the Viking swords, are recognizable derivatives and sometimes subsumed under the term spatha . The Roman spatha was used in war and in gladiatorial fights.

Who are the descendants of the spatha sword?

Perhaps the most recognisable descendant of the spathae were the Viking Age blades. These swords took on a much more acute distal taper and point.

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